Cheap flights from Sydney to Bangkok from $284

The month of October is, on average, the cheapest month to fly to Bangkok from Sydney, with most prices found around $840. The month of May is another great option to travel to Bangkok, with average flight prices from Sydney averaging around $841.

The cheapest day to depart on your flight to Bangkok is on a Wednesday when prices can be found for as low as $1,343. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Friday because tickets tend to average around $1,429. These prices are subject to change though, so be sure to set up a Price Alert for flights to Bangkok.

Flying to Bangkok from Sydney at midday is the least expensive time of day to depart. momondo users have found prices as low as $1,382 when looking at flights departing at midday. Flights to Bangkok are more costly in the afternoon, with an average ticket price of $1,398. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Sydney Kingsford Smith to Bangkok Don Mueang Intl for the best Sydney Kingsford Smith - Bangkok flight prices

You are more likely to see cheaper flights to Bangkok from Sydney when booking weeks ahead of your departure date. In general, you can expect to find flights to Bangkok for around $969 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Bangkok from Sydney for as low as $868 on momondo.

There are 3 cabin classes available to choose from on Sydney Kingsford Smith to Bangkok flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

China Eastern is the most popular carrier operating from Sydney Kingsford Smith to Bangkok

Thai Airways, Scoot and Qantas Airways are the top three most popular airlines that fly to Bangkok from Sydney according to our data. Thai Airways is the first choice among our users, with 54% of people opting to fly with this airline when travelling to Bangkok. Keep in mind that there are 21 different airlines that fly to Bangkok on a routine basis, so you have a few additional options to choose from.

Historically, on average around 14% of flights between Sydney and Bangkok have experienced a delay on any given week. The average delay length over the past 12 months has been 97 minutes.

Generally, flights departing in the early afternoon tend to experience fewer delays. Flights departing at night have, in the past, seen delays more frequently in comparison.

Tuesday is statistically the day of the week that experiences the fewest delays on this flight route. Saturday has historically seen more delays on average compared to the rest of the week.

According to our data, Thai Airways have had the fewest delays on this route over the last 12 months, with about 10% of their flights experiencing any sort of delay.

As of March 2026, there are 15 flights per day flying from Sydney to Bangkok. The most common time of day flights depart is 10:00, with 70% of flights taking off at midday.

As of March 2026, there are 111 flights per week flying from Sydney to Bangkok. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.